I started to lay the Dura Rock 1/4 inch cement board. This is laid in a bed of thin-set mortar and screwed to the floor, to separate the tile from the plywood floor. The expansion and contraction of wood, even a stable wood can pop tiles and crack mortar joints. This also tells me that it allows the cement board to move as one large monolithic slab! I still wonder about that because it is screwed to the plywood???
This is the thin-set that I use, it is Versabond polymer modified. I chose white because I just might be using some colored glass and slate mosaic's, and the white color will reflect the light.
When applying this thin-set you need to use a 1/4 inch notched trowel.
All joints need to be taped with a mesh tape that will resist the corrosive effects of the cement thin-set.
The supervisor in the picture, has been NO help at all....... He tells me this type of work is NOT in his job description LOL!!!
Now I just need to get my porcelain tiles-they are still on order. This layout will be much larger, about five foot wide , but without dry-laying the tiles I cannot get the exact size.
There you have it-the beginning. When the tiles come in I will post an update together with the Mexican inlay tiles that I am planning!! 
